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TDoA Subsample Delay Estimator with Multiple Access Interference Mitigation and Carrier Frequency Offset Compensation for OFDM based Systems

Staudinger, Emanuel and Gentner, Christian (2011) TDoA Subsample Delay Estimator with Multiple Access Interference Mitigation and Carrier Frequency Offset Compensation for OFDM based Systems. In: Proceedings of WPNC 2011. 8th Workshop on Positioning, Navigation and Communication 2011 (WPNC'11), April 07-08 2011, Dresden, Germany.

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Abstract

This paper presents a novel maximum likelihood (ML) time difference of arrival (TDoA) estimation algorithm for subsample delays. We introduce a new initial acquisition and cell search algorithm with implicit multiple access interference (MAI) cancelation. A joint carrier frequency offset (CFO) estimation and subsample delay estimation is used to compensate Doppler spreads and oscillator drifts. Analytical derivations show how the CFO influences the TDoA subsample delay estimation and vice versa. Furthermore, we show through numerical simulations that the geographic base station mapping and the used synchronization codes influence the estimation accuracy. Additionally, we introduce a new successive interference cancelation (SIC) to improve the overall accuracy.

Item URL in elib:https://elib.dlr.de/69324/
Document Type:Conference or Workshop Item (Speech)
Title:TDoA Subsample Delay Estimator with Multiple Access Interference Mitigation and Carrier Frequency Offset Compensation for OFDM based Systems
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Staudinger, EmanuelEmanuel.Staudinger (at) dlr.deUNSPECIFIED
Gentner, ChristianChristian.Gentner (at) dlr.deUNSPECIFIED
Date:7 April 2011
Journal or Publication Title:Proceedings of WPNC 2011
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:3GPP-LTE, Carrier Frequency Offset, Fractional Delay, Interference Cancelation, Ofdm, Positioning, Subsample Delay, TDoA
Event Title:8th Workshop on Positioning, Navigation and Communication 2011 (WPNC'11)
Event Location:Dresden, Germany
Event Type:international Conference
Event Dates:April 07-08 2011
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben GNSS2/Neue Dienste und Produkte (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Communications Systems
Deposited By: Staudinger, Dr.-Ing. Emanuel
Deposited On:20 Apr 2011 10:10
Last Modified:11 Nov 2015 15:43

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